Sliding-door fastener.



I. F, GAWL,

SLIDING DOOR FASTENLEB APPLlcATIoN min JUN; I3. 1515;

Pete'etea Feb. Q0, 1917.

2 SHEETS-SHEET 2.

' residing at Buffalo, Stateof New York,

Door Fasteners, of

UNITED STATES' PM ENT oFFIoE.

JOHN F. CAWL, OF BUFFALO, NEW YORK.

sLIDINe-:noon FAs'rEr 'En To all whom t may concern:

Be it knownthat I, JOHN F. CAWL, a citizen of the United States of America, county of Erie, and have invented certain new rand useful Improvements in Slidingwhich the following is a.fullclear, and exact description. My invention relates generally to sliding doorsl and more particularly to freight car doors and locking means therefor.

It is Well known, to' those skilled in the art, that freight car doors which are hung on the outside of the car often become derailed or otherwise dislocated, and' frey quently are torn from the car by passing vtrains. Furthermore,

with the present construction of doors there is no way of effectively locking the same.

, One of the objects of my invention has l. been, tol provide a sliding door for' freight `itfimpossible for the door cars which shall be mounted to operate'4 within the ,casing ofthe car, thereby making to be accidentally dislocated or detached.

,Another object has been to provide a novel and' effective locking means for the door, which cannot be operated by any un- Y authorized persons.

Furthermore, I have sought 'to provide a lock for my door, which, when set in fits YI'AL'- open position, shall remain so set until the door 1s partly open, and be re-set by further movement of the door.

I,Moreoveig' my invention is simple and cheap to manufacture, durable in its construction.

The above objects 4and advantages have been. accomplished by the device shown in the ac'companying drawings. In the draw- `rings,,forming part of this application:

l,I hgure 1 is a sectional elevation of the framework of the freight c'ar, taken on line of Fig. 2, showing my complete device f e elevation. Fig. 2 is a fragmentary, sectional, plan `View, taken on line 2`2 of Fig. 1. Y

Avation through a car `and Ais taken on line 5-5.of Fig.. 1.

. Fig.. 3 is 'a fragmentary elevation of the devicenshown inFig. l and shows the parts of thelock in their open positions;

'Fig'. 4 is a fragmentary, sectional eleprovided with my device a'nd is taken on line 4-4 of Fig. 3.

Fig. 5 'is a fragmentary, sectional, plan view of a portion ofl the lock of my device Specication of Letters Fati nt.

of few parts, Vand Patented Feb. 20, 191 r'1.

Application led June 13, 1916. Serial No. 103,420.

In the lrawings: 15 represents aboxcar to which ny devlce is attached showingf the door and locking means thereof: arranged within tha casing 16 of the car. 17 is *the 7 door of my device which is made, preferably," of sheet ;netal, and has secured alon its upper edge two angle firons 19, where y itV is stiffen'eil and strengthened. These angle irons also form a support for the rollers 18. 'ly The rollels 18 are'supported bytracks 20, formed p1 eferablyvof angle iron, and suitlably supplirted'within the casing 16 offthe frei ht ca f. The door 17 is provided nea'r its ront edge with an aperture 69 audit-lies door is so arranged that it will moveinto-l lever. These i levers .of the tra( ks 20. The lower lock lever 27 4:is set into the casing' of the car. and is pivotally secu-ed by a racket 28 .suitably car- 9 ried by the frame work ofthe car.l 29 is the-lock Casin ,of my device which is located within the rame work of theic'a'r and at sone-point adjacent the openin the car att ie front edge'of the door. ith-1.1 in this cas lig ifi'ftatably mounted a member 30 (Figs. 5 and 6)v which 'is-'prof vided with a centra-l, annular portion,"31," and radial. amis 32 and 33 'arranged`"dia metrically opposite each other. The upper 1 lock lever 26 is connected with the ar1'n"33fA by'means lof a link 34a d the lower lock lever 27 is connected the arm l32'jby means of a link35, whereby the outerends ofthe lock levers willfb'fm'oved toward'or 1 from eachother by the rotation of the l member 30. A helical spring'fisq the casing Hush with the edgeof theopen-l an upper lock lever*` at one'end to the outer end of the arm .33 and at its other end to the casing 29, whereby the lock member 3Q and lock levers 26 and 27 are kept normally in the positions shown in Fig. 1.

42 formed in the inner end ofthe lock member and in a bearing plate 43, whereby thestud member 30 and -stud are locked against rotation when said key is in engagement with said slot. A pin 44 is arranged xin the lock member .30 and passes through an enlarged slot 45 lformed in the lock stud, whereby the axial movement of said stud is limited'. A helical spring 46 is disposed within the aperture 36 of the lock member and between the shoulder 38 and head 40ct the lock stud, wherebythe lock stud is retained lnormally in the position shown in Figs. 5 and 7.V

47 is the operating key of my lock, which has a round shank 4S and alT-shaped handle 49. The shank 48 of the keyis provided with two diametrically opposite and radially extending lugs 51 which are arranged to engagewith slots 52 formed in the wall of the outer end of the lock member 30. These lugs are so located'that before they come into'engagement with the slots 52 the 5 trip lever 56,

. normally in Contact with the when the lugs 51 are lock stud 24 has been pushed inwardly by the shank 48, sufiic'iently farto release the stud key 41 from engagement with the s10t142.

Arranged on the upper edge of the door and near its forward en 'is a tri-p 'block 54 whichv is engageable with'the outer end ofa pivotally supported by a suitablebracket 57. Within the casing 29 .of the lock is arranged, a trip arm58 which ispivo'tally supported Aat one end and connected at its other end to the outer end 'of the lever 56 ,by means of a link able with anotch 61 formed ery of the Vannular portion 31 of ,the lock'I member 30. A helical spring 62 is arranged within the casing 29 and is wnnected to theloek arm' 58, lwhereby the detent' 60 is kept annlula'l part 3 1o f thelock member. v

'3E-Then the door of my device is clon-ed and locked 'th'e parte are in the positions shown in Fig. 1.v When it isdcsired tof' open the door the operating key 47 is placed within the aperture 36 of the lock member and.,` in register Wit?A the 'in the peri ph-i ltripV 59. This arm is/ 4plovidedfwith a detent 60 w slots 52 of the said lock member, the key is pushed inwardly so as to move the lock stud 39 axially and release the stud key 41 from its engaging slot 52 (Fig. 6). This releases the lock member 30 which may then be rotated by the operating key. When the lock member is rotated to theposition shown in Fig. 3 the lock arms 26 and 27 will have their outer ends released from the notches 25 of the door and at this time the detent 60 will engage with the slot 61 of the lock member and thus prevent the return of the loek member to its normal position. `When this detent is in the position shown in Fig. 2 the trip arm 58 will be slightly raised and the outer end of the trip. lever 56 will be lowered so as to be inthe path of travel of `the trip block 54. The door may now be be moved, by the helical spring 53, to their normal positions (see Fig. l) whereby the lock levers will be reset and i osition to again engage with the notches 25' of the door when it'is closed.

Obviously, some modifications of the details herein shown and described may be made without departing from the spirit of my invention or the scope of the appended claims, and I do not,.therefore, wish to be limited to the exact embodiment herein shown and described.

Having thus described my invention, what I claim is:

1. In a construction of the character set forth, the c ombinatior'i.with a doorcasing, of a 'door slidably mounted within said casing, said door being formed with a notch in the upper and in the lower edge, pivotally mounted lock levers, within said casing, engaging each of the notches in said door,an'd y,lock-,controlling means, within said casing, governing-the positions and operation of l' saidf levers. 2r .In a construction of the character set hich is engage! forth, the combination with a door casing,

of a door slidably mounted Within said casing, said door being formed with a notch in the upper and in' the lower edge, pivotally mounted lock levers, 'withinuseid casing, engaging each' of the notches in said door, lock-controlling means, within said casing, coii'nected with said lock levers, a trip lever pivotally mounted within said casing and near one ofsaid lock levers, means for keeping said lock levers in their open positions, and means'carried b said door and engageable with said trip iever forlresetting said lock levers. t

3. In e construction of the character set "forth, the .eombmatlon wlth a door easmg,

of n. door slidably mounted Within said casing, seid door being'forlhed with a, notch in formed with@ central aperture An its fnr- 'the upper and in the lewer edge, v-pvot'ttlly Ward end and :L reduced aperture in its rear end a lock stud slidebly mounted Within the apertures,l e stud key for preventing the rotation of said loels member, and an operating key engegeable with the aperture in the ferward`end ofgsdlock member, Whereby said lock member is released when'said operating key sinferted in :the lstxmeni I V2C tio-ned aperture. A

In testimony whereof, I have 'hereunto signed my name' n the presence JfzwimsilhA scrbing witnesses. 

